Every day, trainers are stuck in a cycle—working hard but struggling to stand out. They fight for clients, compete on price, and wonder why their careers aren’t moving forward.
Meanwhile, elite trainers are charging premium rates, getting better clients, and making a real impact. The difference? Knowledge. Expertise. A system that delivers undeniable results.
Here’s the truth: Any trainer can get someone to lift more weight. But only a true professional knows how to optimize performance, prevent injuries, and create lasting transformations.
My name is Carlos Castro. I’m a strength coach and I have produced Gold and Silver medalists in World Championships, Silver and Bronze medalists in Pan-Americans, and Gold, Silver, and Bronze medalists in National Championships, in sports such as Brazilian Jiujitsu, Speed Motorcycle, Karate, Swimming, Golf, and more.
I have already shared my knowledge with hundreds of students, and they have succeeded in their careers, becoming fully booked, opening their facilities, making jaw-dropping transformations, and producing Olympic medalists.
And I’m ready to share my knowledge, step-by-step tools, and expertise with you!
THIS COURSE IS FOR YOU IF:
Fitness is your passion
You’re an athlete or former athlete
You’re a personal trainer
You’re an experienced strength coach
AFTER THE COURSE YOU WILL KNOW:
Anatomy and its application for strength training
How to find muscle weaknesses and disbalances
How to identify flexibility and mobility restrictions
The exact exercises to address finding flexibility, mobility, and muscle weaknesses
10 loading parameters and interactions between them
The effect of loading parameters on the body’s hormonal output
How to write individualized, effective, and results-producing training programs according to client needs and objectives based on the result
PROGRAM OF THE COURSE:
MODULE 1: Anatomy
- Abdominal Region: 5 muscles
- Elbow Extensors Group: 2 muscles
- Elbow Flexors Group: 4 muscles
- Forearms Group: 10 muscles
- Hip Abductors Group: 5 muscles
- Hip Addcutors Group: 3 muscles
- Hip Extensors Group: 1 muscle
- Hip Flexors Group: 2 muscles
- Knee Extensors Group: 4 muscles
- Knee Flexors Group: 5 muscles
- Lower Leg Group: 3 muscles
- Neck Group: 5 muscles
- Pectorals Group: 2 muscles
- Shoulder Group: 8 muscles
- Upper Back Group: 4 muscles
- Posterior Chain Group: 2 muscles
Your outcome:
You will gain functional knowledge of the main muscle groups, their locations in the body, their functions, and how to train them for yourself and your clients properly.



MODULE 2: Structural Assessment
- Upper Body Flexibility Tests: 5 tests
- Stretches For The Upper Body: 5 chapters
- Upper Body Strength Test: 1 chapter
- Testing 1RM
- Testing muscle fiber composition
- Progressions For The Upper Body: 2 chapters
- Lower Body Flexibility Test: 10 tests
- Stretches For The Lower Body: 10 chapters
- Lower Body Stress Tests: 2 chapters
- Progressions For The Lower Body: 4 chapters
- Use of the Structural Assessment module of the Training Software
- 1 DAY In-person class in Montenegro on March 21 or May 20 in the Dominican Republic.
Your outcome:
You will know how to properly assess the client/athlete on the first meeting.
You will be able to understand, diagnose, and fix the limiting factors in terms of flexibility and strength that can interfere with your client's progress.



MODULE 3: Science of Program Design
- Definitions
- Repetitions: 6 chapters
- Sets: 5 chapters
- Rest Intervals: 5 chapters
- TEMPO & Time Under Tension: 6 chapters
- Exercises: 3 chapters
- Training Frequency: 3 chapters
- Progress: 3 chapters
- Loading Parameters Interactions
- 3 Case studies
- 4 Case practices
- Application of the Training Software
- 2 DAYS In-person class in Montenegro March 22-23 or in the Dominican Republic May 21-22
Your outcome:
The ability to write individualized, effective, and results-producing training programs according to client needs and objectives based on the results of the Structural Assessment.



MODULE 4: Practice Observation
You are entitled to 20 hours of practice observation with the world’s best coaches.
Learn how theory and practice come together by observing how the best in the world do it.
Your outcome:
By witnessing firsthand how some of the world’s best trainers work, you can, among other things, perfect the art of properly loading clients, learn how to cue for optimal execution, learn the proper form of different exercises, and analyze a lift for valuable information.



PROGRAM:
- Module 1: Anatomy for Trainers
- Module 2: Structural Assessment
- Module 3: Science of Program Design
- Module 4: 20 hours of practice observation
INCLUDED:
- 6-month access to the online class material
- 1-year access to the training software
- Facebook private group
- 2 Q&A session with Carlos
- Certificate as a Personal Trainer after passing the final exam
- 3-month mentorship with Carlos Castro
- 1 year access to the class material
- 20% discount to any other classes
The choice is yours:
Do you want to learn from a coach who has taken athletes from 10 different sports to the podium?
Or do you want to learn from someone who only teaches theory in a classroom?
This is your opportunity to break free from mediocrity.
The Personal Trainer Certification Program from Strength Community, led by world-renowned coach Carlos Castro, gives you the knowledge, skills, and tools to transform not just your clients—but your own career.

What You’ll Learn
ANATOMY FOR TRAINERS
Understand the body at a deeper level and its application to strength training to create more effective training plans.
STRUCTURAL ASSESSMENT
Identify and fix muscle imbalances, mobility restrictions, and movement inefficiencies.
SCIENCE OF PROGRAM DESIGN
Stop guessing. Learn how to design programs that actually deliver.
This is what my students think about
the benefits my classes offer them:

Amazing environment, great environment and the best mentor. @martinberanekk
I doubled my income in just 3 months after attending the seminars @alenadxbfit
Great community, tons of knowledge, lot of fantastic people and athletes as well! @nemanja_fit
My training, nutrition, and everything could not be going better; I appreciate you. I’m learner, bigger, and am in far less pain. – Christopher Rombola
I can certainly say that my athletic career is divided in two: before, and after training with Carlos. – Santiago Lopez
Forever grateful for Carlos and looking forward to learning from him again very soon. – Estevan Archuleta
Ever since working with Carlos, my competitive track record has never been so good. I owe a big part of my success in the ring to Carlos and the rest is history. Thank you Carlos. - Georges Galarregui



How to Get Certified
- Pass each course and the final exam with at least 80%.
- If you fail? You get one free retake. If you fail again, you’ll pay $150 per extra attempt. Excellence isn’t free.
- Complete 20 hours of shadowing at designated gyms (in-person or online). This is where theory turns into mastery.
Bonuses You Get When You Enroll
- 1-Year Access to Premium Training Software ($470 value)
- Private Facebook Group – Get guidance from elite coaches and network with top trainers.
- 6-Month Access to Online Materials – Review lessons anytime to reinforce your learning.
With this certification, you’ll finally have the skills to become the trainer people seek out and are willing to pay more for.
The Decision is Yours
You can continue doing what you’ve always done and get the same results…
Or you can take this step, invest in yourself, and become a Certified Personal Trainer by Strength Community—a title that sets you apart from the rest.
Are you ready to stop struggling and start thriving?
The Market is Overcrowded with Trainers.
The World Needs Experts.
Click below and take control of your career today.